Drilling Technology of Torsional Impact Rotary Reaming in Underground Coal Mine
According to the reaming requirement for large diameter directional drilling in hard rock of coal mine roof, the drilling technology of torsional impact rotary reaming is put forward. Based on the simulation results of FLUENT finite element software, the research of small displacement quantification...
| Published in: | Meikuang Anquan |
|---|---|
| Main Author: | |
| Format: | Article |
| Language: | Chinese |
| Published: |
Editorial Office of Safety in Coal Mines
2020-06-01
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| Subjects: | |
| Online Access: | https://www.mkaqzz.com/cn/article/id/6870 |